2018 GMC Terrain SLE
Vehicle Details
SLE
O'Fallon, MO 63366
Is this 2018 GMC Terrain SLE a good deal?
OAV verdict: Fair Price
Why: Listed at $10,999, comparable market range $10,895–$16,900, based on 11 comparable listings. Days on lot: 17 days (market average 109 days).
Market price position
$10,999 · within market range
- Regional range
- $10,895 – $16,900
- vs. market
- $104 above low · $5,901 below high
- Comparable vehicles
- 11
Market Retail Price (MRP™)
$13,898This vehicle $10,999 · $2,899 (21%) below MRP
MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.
True Retail Value (TRV™)
$10,740This vehicle $10,999 · $259 (2%) above TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-07-30) — an estimate, not an appraisal. How TRV works.
Similar vehicles recently sold in an estimated 14–58 days.
Market Breakdown
Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.
Golden Cars
O'Fallon, MO
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
Request availability and out-the-door price
OAV will route your inquiry to Golden Cars for current availability of this 2018 GMC Terrain SLE and an out-the-door price quote (taxes, fees, addons included).
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
About This 2018 GMC Terrain
Listing updated: Jul 29, 2026Listed by an independent dealer in O'Fallon, MO · On lot for 17 days · VIN verifiable at NHTSA
This used 2018 GMC Terrain SLE is listed at $10,999 by golden cars in O'Fallon, MO 63366. It has 149,788 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Gray. It features a FWD drivetrain with a 1.5L I4 engine and Automatic transmission.
OAV's AI-powered Price-to-Market analysis rates this vehicle as Fair Price — priced at market value. Based on 11 similar vehicles in the O'Fallon market, the estimated market range is $10,895 to $16,900.
This vehicle has been on the lot for 17 days.
Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).
Market context
This listing is part of OAV's broader O'Fallon, MO suvs market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.
How this deal is rated
OAV compares this 2018 GMC Terrain against similar vehicles currently available in the local and regional market — same make, model, and year range, filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:
- Great Deal — priced below the typical range for comparable vehicles.
- Fair Price — priced within the expected range for comparable vehicles.
- Overpriced — priced above the typical range for comparable vehicles.
Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.
How this listing is verified
This vehicle listing was aggregated from an independent dealer in O'Fallon, MO, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GKALMEXXJL312599 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.
Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is processed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.
2018 GMC Terrain Market in MO
Comparable Vehicles
150
Average Price
$14,785
Price Range
$5,620–$28,995
Avg Days on Lot
109
Based on 150 comparable 2016-2020 GMC Terrain listings in MO, the average asking price is $14,785. This listing at $10,999 is $3,786 below average (26% below market). Comparable prices in MO range from $5,620 to $28,995. Similar vehicles spend an average of 109 days on dealer lots in this market.
Similar GMC Terrain Listings in MO
8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: SLE — compare trims below)
2018 GMC Terrain
SLE
Independence, MO
2018 GMC Terrain
SLE
Belton, MO
2018 GMC Terrain
SLE
Saint Charles, MO
2018 GMC Terrain
SLE
St. Louis, MO
2016 GMC Terrain
SLT
St. Louis, MO
2016 GMC Terrain
SLT
Carthage, MO
2016 GMC Terrain
SLT
Imperial, MO
2017 GMC Terrain
SLE-1
Richwoods, MO